The Origins of Intelligence Testing

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Across
  1. 7. nineteenth-century movement that proposed measuring human traits and using the results to encourage only smart and fit people to reproduce
  2. 9. the ratio of mental age to chronological age multiplied by 100
  3. 10. proposed that nature selects traits through survival of the fittest
Down
  1. 1. the widely used American revision of Binet's original intelligence test
  2. 2. modified Binet's questions and established new age norms
  3. 3. stated that "no two persons are born exactly alike; but each differs from the other in natural endowments..."
  4. 4. collaborated with Simon to developed mental age
  5. 5. English scientist with a fascination with measuring human traits; wondered if "natural ability" could be measured
  6. 6. developed the intelligence quotient, or IQ
  7. 8. a measure of intelligence test performance; the chronological age that typically corresponds to a given level of performance